/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/

/*
This program tests the itk::DOMNode::Find() function that searches for a node using a query string.
Make sure that the testing of itk::DOMNode::GetPath() has been performed before doing this type of tests,
because it is used here to verify the correctness of the query output.
*/

#include "itkDOMNodeXMLReader.h"

#include <iostream>
#include "itkMacro.h"

int
itkDOMTest4(int argc, char * argv[])
{
  if (argc < 4)
  {
    std::cerr << "arguments expected: <test>.xml <QueryString> <GroundTruthPathString>" << std::endl;
    return EXIT_FAILURE;
  }

  try
  {
    // read the DOM object from the input XML file
    itk::DOMNodeXMLReader::Pointer reader = itk::DOMNodeXMLReader::New();
    reader->SetFileName(argv[1]);
    reader->Update();
    itk::DOMNode::Pointer dom = reader->GetOutput();

    std::string sQueryString = argv[2];
    // itk_add_test has problem to supply an empty string, so we use a special string
    if (sQueryString == "[]")
    {
      sQueryString = "";
    }

    std::string sGroundTruthPathString = argv[3];
    // itk_add_test has problem to supply an empty string, so we use a special string
    if (sGroundTruthPathString == "[]")
    {
      sGroundTruthPathString = "";
    }

    itk::DOMNode * node = dom->Find(sQueryString);
    if (!node)
    {
      throw "testing failed";
    }
    std::cout << "node path: " << node->GetPath() << std::endl;
    if (node->GetPath() != sGroundTruthPathString)
    {
      throw "testing failed";
    }

    // the testing is successful if you reached here
  }
  catch (const itk::ExceptionObject & eo)
  {
    eo.Print(std::cerr);
    return EXIT_FAILURE;
  }
  catch (...)
  {
    std::cerr << "Unknown exception caught!" << std::endl;
    return EXIT_FAILURE;
  }

  return EXIT_SUCCESS;
}
